# -- coding: utf-8 --
# @Time : 2021/3/20--15:28
# @Author : ChinaV
# @File : 圆中方 简单应用题8-4.py


# PY201.py
import turtle

turtle.pensize(2)
for i in range(4):
    turtle.fd(200)
    turtle.left(90)
turtle.left(-45)
turtle.circle(100 * pow(2, 0.5))
